This document provides an overview of the Ruby programming language. It discusses that Ruby was created by Yukihiro "Matz" Matsumoto to emphasize human needs over computer needs. Major versions of Ruby include 1.0, 1.8.x, 1.9.x, and implementations like JRuby and Rubinius. The document outlines Ruby concepts that will be learned like dynamic typing, everything being an object, blocks and lambdas, and regular expressions support. It also discusses the book "The Well-Grounded Rubyist" and learning approaches like test-driven development and exploration.

1. RubyClass

2. The Ruby Language Originally by Yukihiro "Matz" Matsumoto “Ruby is designed for programmer productivity and fun, following the principles of good user interface design. He stresses that systems design needs to emphasize human, rather than computer, needs.” http://en.wikipedia.org/wiki/Ruby_(programming_language)#History Ruby 1.0 was released in 1996.

3. The Ruby Language Dynamically typed Interpreted Can be modified at runtime Object oriented Blocks & lambdas Nice support for Regular Expressions

4. Ruby Implementations Ruby 1.8.x (MRI) Ruby 1.9.x (YARV) Rubinius JRuby MacRuby, HotCocoa IronRuby for .NET

5. What you will learn Ruby Language concepts & tools Language syntax Some standard library classes & gems Common patterns

6. Book The Well-Grounded RubyistCovering Ruby 1.9David A. Black

7. How you will learn Exploration: experiment, play Test-Driven Development (TDD) Initially as a learning methodology Later as a development methodology Ask questions Learn to find your own answers Read Plus whatever works best for you

8. Class Structure Talk Live Coding Demonstrations In-class coding Coding at home (or in social groups) Google Group

9. Other Resources SF Ruby Meetup RailsBridge See Last page of hand-out for more

11. Ruby Language Overview Dynamically typed Interpreted Can be modified at runtime Object oriented Blocks & lambdas Nice support for Regular Expressions

12. Lets get started IRB: InteractiveRuBy >> 4 >> 4 + 4

13. Everything is an object “test”.upcase “test”.class “test”.methods

14. Everything evaluates to something 2 + 2 (2+2).zero?

15. Methods are Messages thing.do(4) thing.do 4 thing.send “do”, 4

16. Operators are Methods thing.do 4 thing.do(4) thing.send “do”, 4 1 + 2 1.+(2) 1.send "+", 2

17. Write your first Ruby class

18. Test-First Learning Similar methodology to TDDwith a different purpose and workflow Teacher writes the test Student implements the code

19. Test-Driven Development Design Focus / Project Management Documentation / Collaboration Creation of Tests

20. Moving to TDD Build tests before refactoring or upgrading Test-drive bug fixes Write tests for anything you worry about Continuous Integration is essential Remove unused (untested) code

21. RED – GREEN – REFACTOR Write the test Watch it fail Make it pass Make the code good, make sure it still passes

22. Unit Test Frameworks Test::Unit Shoulda Rspec http://github.com/ultrasaurus/test-framework-comparison

23. Integration Test Frameworks Cucumber Webrat Selenium And more…

24. Rspec Describe the feature Verify expectation

25. Demonstration